Literary usage of Gas heat

Below you will find example usage of this term as found in modern and/or classical literature:

1.Engineering Thermodynamics by Charles Edward Lucke (1912)"... Therefore Heat of air gas react, per Ib. C _ Lbs. C gasified to make water
gas Heat of water gas react, per Ib. C Lbs. C gasified to make air gas ..."

2.Handbook of Mechanical and Electrical Cost Data: Giving Shipping Weights by Halbert Powers Gillette, Richard Turner Dana (1918)"It Is apparent, then, that an electric heat unit must rost nearly four times as
much as a gas heat unit, but with present processes the relative rates are: ..."

3.A Text Book of Engineering Thermodynamics by Charles Edward Lucke, John Joseph Flather (1915)"... C _ Lbs. C gasified to make water gas Heat of water gas react, per Ib. C Lbs.
C gasified to make air gas 1545z-4298/ v ' 4298 ..."

5.Technical Thermodynamics by Gustav Zeuner (1906)"If the combustion takes place without heat supply from, and without heat withdrawal
by, the outside, then evidently the gas heat at the end is equal to that ..."